The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 1997
Filed:
May. 23, 1995
Curtis G Blount, Wasilla, AK (US);
Robert A Benham, Albuquerque, NM (US);
Jerry L Brock, Los Lunas, NM (US);
John A Emerson, Albuquerque, NM (US);
Keith R Ferguson, Anchorage, AK (US);
Donald F Scheve, Anchorage, AK (US);
Joseph H Schmidt, Anchorage, AK (US);
Karl W Schuler, Albuquerque, NM (US);
Philip L Stanton, Albuquerque, NM (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
Perforations and other openings in well casings, liners and other conduits may be substantially blocked or sealed to prevent fluid flow between the casing or liner interior and an earth formation by placing a radially expansible sleeve adjacent the perforations or openings and urging the sleeve into forcible engagement with the casing or inner wall using an explosive charge. An apparatus including a radially contracted sleeve formed by a coiled plate member or a tubular member having flutes defined by external and internal folds, may be deployed into a well casing or liner through a production or injection tubing string and on the end of a flexible cable or coilable tubing. An explosive charge disposed on the apparatus and within the sleeve may be detonated to urge the sleeve into forcible engagement with the casing inner wall.